you're proposing to increase defense spending by $2 trillion. >> neither of these numbers are accurate. >> biden himself acknowledges he will be ready to respond if ryan disputes his record. >> i just want to make sure that when i say these things, no, no, no, i don't have the position or that's not the governor's position. >> to fully prepare, biden had a strict daily ritual. afternoons where biden rehearsed answering moderator questions. dinner time at home with his wife and after dinner, biden returned to the hotel for the 90 minute mock debates took place. biden's team wants to make sure you don't see any of those gaffes he's so notorious for. >> there's nothing about joe biden that i think people in this state don't like about him and love about him. >> but it can be a hard line between speaking from the heart and moments like this one last week on the middle class. >> how they can justify raising taxes on the middle class that's been buried the last four years. >> or in august, speaking to an audience that included many african-americans. >> he's going to let the big banks once a